
\begin{table}[!htbp] \centering 
  \caption{Association between opening an overdose prevention center and crime} 
  \label{TableDiD_Poissoncrime} 
\small 
\begin{tabular}{@{\extracolsep{-2pt}}lcccccccccc} 
 \hline 
\hline   

 
& \thead{Index \\ crime} & Violent & Property & Robbery & Assault & \thead{Aggr \\ Assault} 
            & \thead{Simple \\ Assault} & Burglary & Theft & \thead{Vehicle \\ theft} \\
  & (1) & (2) & (3) & (4) & (5) & (6) & (7) & (8) & (9) & (10)\\ 
\hline   
\multicolumn{10}{l}{\footnotesize \textit{A. Immediate vicinity}} \\
 Treat*Post & 0.02 & $-$0.08 & 0.02 & $-$0.28 & $-$0.02 & 0.27$^{**}$ & $-$0.22 & 0.10 & $-$0.07 & 0.48 \\ 
  & (0.11) & (0.11) & (0.11) & (0.23) & (0.08) & (0.08) & (0.16) & (0.45) & (0.12) & (0.37) \\ 
\hline
Percent change &   2.0\% &  -7.8\% &   2.1\% & -24.5\% &  -1.9\% &  30.4\% & -19.7\% &  10.4\% &  -6.6\% &  61.5\% \\ 
95\% CI (\%) & -17.4,  25.9 & -25.8,  14.5 & -17.0,  25.6 & -51.6,  18.0 & -16.2,  14.9 &  10.4,  54.0 & -41.5,  10.2 & -54.1, 165.6 & -26.1,  18.1 & -22.4, 236.1 \\ 
Mean & 6.7 & 7.7 & 3.1 & 1.7 & 5.9 & 1.9 & 4.1 & 0.6 & 2.3 & 0.2 \\ 
Observations & 912 & 912 & 912 & 912 & 912 & 912 & 912 & 912 & 912 & 874 \\ 
\hline
\hline
\multicolumn{10}{l}{\footnotesize \textit{B. Neighborhood}} \\
  Treat*Post & $-$0.17 & $-$0.24 & $-$0.12 & $-$0.43$^{*}$ & $-$0.20 & $-$0.08 & $-$0.27 & $-$0.15 & $-$0.25$^{*}$ & 0.53$^{**}$ \\ 
  & (0.11) & (0.15) & (0.09) & (0.18) & (0.15) & (0.16) & (0.20) & (0.11) & (0.11) & (0.18) \\ 
\hline
Percent change & -15.7\% & -21.4\% & -11.1\% & -34.9\% & -17.7\% &  -7.5\% & -23.6\% & -13.5\% & -21.8\% &  69.1\% \\ 
95\% CI (\%) & -31.8,   4.2 & -41.3,   5.2 & -26.1,   6.9 & -54.0,  -7.8 & -38.1,   9.3 & -32.8,  27.4 & -48.5,  13.3 & -30.6,   7.7 & -37.5,  -2.1 &  18.3, 141.7 \\ 
Mean & 4.7 & 4.9 & 2.3 & 1.1 & 3.8 & 1.2 & 2.5 & 0.5 & 1.6 & 0.2 \\ 
Observations & 2,736 & 2,736 & 2,736 & 2,736 & 2,736 & 2,736 & 2,736 & 2,688 & 2,736 & 2,592 \\ 
\hline 
\hline   
\multicolumn{11}{l} {\parbox[t]{21.5cm}{ \scriptsize Notes: 
Difference-in-differences Poisson regression estimates on the crime effects of 
opening the overdose prevention centers. The specifications include hexagon and month-year 
fixed effects. Robust standard errors clustered at the hexagon level in parentheses. 
The specification follows the equation in the Supplementary Material: Statistical Methods, where
POST is an indicator for whether a given observation occurs after December, 2021 when the 2 safe 
injection sites were opened to the public. TREAT is an indicator for whether a hexagon contains 
one of the 2 OPCs as opposed to a comparison unit. Hence, the table shows the coefficient on the 
interaction between POST and TREAT, which is the estimated difference-in-differences intervention effect.
Index crimes include the six UCR part I crimes (murder, robbery, aggravated assault, 
burglary, theft, and motor vehicle). Violent crimes include murder, robbery, and aggravated
and simple assault. Property crimes include burglary, theft, and motor vehicle theft. 
Panel A examines the immediate vicinity (a single hexagon around the site). 
Panel B inspects the neighborhood (three hexagons surrounding the site). 
The bottom rows exhibit the percentage change (incidence rate ratio - 1 = exp($\beta$)-1), 
followed by the 95 percent confidence interval, and the pre-intervention mean count crime on 
the neighborhoods with OPCs and the number of observations. 
$^{*}$p$<$0.05; $^{**}$p$<$0.01; $^{***}$p$<$0.001. }} \
\end{tabular} 
\end{table} 
